Escape name and category of trace events.

base/trace_event/trace_event_unittest.cc

Index: base/trace_event/trace_event_unittest.cc
diff --git a/base/trace_event/trace_event_unittest.cc b/base/trace_event/trace_event_unittest.cc
index 91155ea1fe3456ef925b98dd98b32a22e36737d7..74adaaa93611943fa088801cd0c50b346122b8fa 100644
--- a/base/trace_event/trace_event_unittest.cc
+++ b/base/trace_event/trace_event_unittest.cc
@@ -2330,6 +2330,19 @@ TEST_F(TraceEventTestFixture, PrimitiveArgs) {
   EXPECT_EQ(1, int_value);
 }
 
+TEST_F(TraceEventTestFixture, NameAndCategoryEscapedIfNeeded) {
+  TraceLog::GetInstance()->SetEnabled(TraceConfig(kRecordAllCategoryFilter, ""),
+                                      TraceLog::RECORDING_MODE);
+  TRACE_EVENT0("category", "name\\with\\backspaces");
+  TRACE_EVENT0("category\\with\\backspaces", "name");
+  EndTraceAndFlush();
+
+  EXPECT_TRUE(FindMatchingValue("cat", "category"));
+  EXPECT_TRUE(FindMatchingValue("name", "name\\with\\backspaces"));
+  EXPECT_TRUE(FindMatchingValue("cat", "category\\with\\backspaces"));
+  EXPECT_TRUE(FindMatchingValue("name", "name"));
+}
+
 namespace {
 
 bool IsArgNameWhitelisted(const char* arg_name) {